Self-loading repeating firearm



Feb. 29, 1944. c. G. swEBlLlUs SELF-LOADING REPEATING FIREARM Filed Oct'. 15, 1940 5 Sheets-Sheet 1 Feb.

'9, 1944 c. G. swEBlLlus SELF-LOADING REPEATING FIREARM l Filed'Oct. 15, 1940 5 Sheets-Sheet 2 Feb. 29, 1944.

C. G. SWEBILIUS sELFALoADING REPEATING FIREARM Filed 0st. 15, 1940 5 Sheets-Sheet 3 e m a fr Feb. 29, 1944. 4 c. G. swEBlLlus 2,342,824

' SELF-LOADING REPEATING FIREARM Filed Oct. y15, 194D 5 Sheets-Sheet 4 i z`| 0 .Ji 73 37 so gq www l V52 j Feb. 29, 1944. 4 C- G swEBlLlUs 2,342,824

SELF-LOADING REPEATING FIREARM Filed Oct. l5, 1940 5 ShetS-Sheet 5 Patented Fel. 29, 1944 UNITED' STATES AParizlv'r oFFlcE. f

snm-LOADING BEPEATING mmm Application October 15, 1940, Serial No. 361,208 9 Claims. (Cl. 42-3) The present invention relates-to improvements in self-loading repeating rearms, that is to say, iirearms of the type wherein the forces de veloped by the discharge ofa given cartridgev are utilized to operate the rearm and effect the extraction and ejection of the just-fired cartridge and the insertion `of a fresh cartridge preparatory to another cycle of operation.

Oneof the objects of the present invention is to provide a superior self-loading repeating fire,y arm characterized by `fewness of parts and low cost for manufacture.

Another object of the present invention is to provide a superior iirearm of the type referred to, and which is characterized by ruggedness and reliability of performance over long periods of time under adverse conditions.

A further object of the present invention is to provide a self-loading repeating rearm having a superior construction and arrangement of parts whereby danger to the marksman by rea.- son of blow-backs and other misperformances of cartridges, will be substantially eliminated.

Still another object of the present invention is to provide a superior rearm of the type reierred to, which is characterized by its capacity Vfor selectively discharging once for each pull upon the trigger or continuously by merely holding the trigger back. 1

AV further object is tol provide a superior firearm of the character just above referred to wherein provision is made for effecting three distinct adjustments of the rearm by the maover the` prior art and which are not claimed in any separate application.

Inthe accompanying drawings, in which certain modes Ofcarrying out the present invention are shown for illustrative purposes:

Fig. 1 is a view in a side elevation of a selfloading repeating firearm embodying the present invention;

nipulation of a single manual control-member lconvenience in transportation, but in which provision is made for securely coupling the parts when the same are assembled.

With the above and other objects in view, as will appear to those skilled in the art from the present disclosure, this invention includes all features in the said disclosure which are novel Fig. 2 is a view of the central portion of the irearm shown mainly in vertical central-longitudinal section and partly in side elevation with the mechanism shown in cocked position preparatory to the discharge of the firearm, and with the mechanism set for effecting the so-cailed semi-automatic operation of the rearm;

Fig. 3 is a view corresponding to Fig. 2, but showing the parts in the positions which they assume at the instant of the discharge of the rearm; I

Fig. 4 is a view generally corresponding to Figs. 2 and 3 though less comprehensive, and showing the parts in the positions which they assume when the breech-bolt is in its cocked position and the control-member has been turned into its so-called safe position;

Fig. 5 is a view corresponding to Fig. 4, but showing vthe parts in the positions which they assume when the breech-bolt is cocked and the mechanism is set for the so-called full-automatic operation of the firearm;

Fig. 6 is a broken transverse sectional view taken on the line 6 6 of Fig. 2, but on a larger scale; A

Fig. 7 is a similar view taken on the line 'i-'I of Fig. 2;

- Fig. 8 is a broken transverse sectional view taken on the line 8 8 of Fig. 2, but on a larger scale;

Fig. 9 is a similar view taken on the line 9-9 of Fig. 2;

Fig. 10 is a. broken transverse sectional-view taken on the line lil-I0 of Fig. 2;

Fig. l1 is a broken view in horizontal section taken on the line II--IIl of slightly reduced scale;

Fig. 12 is a perspective view of the ejector, detached;

Fig. 13 is a view in side elevation of the upper v receiver-member together with the rear por-` tion of the barrel assembled therewith;

Fig. 14 is a transverse sectional view taken on the line ld-l of Fig. 13;

. Fig. 15 is a view mainly in side elevation and partly Vin vertical section of the lower receiver- Fig. 2, but on aA Fig. 19 is a perspective view of the pivotal latching-lever detached;

Fig. 20 is a similar view of the latch-releasing lever, detached;

Fig. 21 is a perspective view of the. sear, detached;

Fig. 22 is a similar view of the Sear-actuating lever, detached;

Fig. 23 isa perspective view of the trigger together with the scar-actuating dog carried there- Fig. 24 is a perspective view of the scar-actuating dog, detached;

Fig. 25 is a perspective view of the unit comprising the selector-lever and its torsion-spring, detached; Fig. 26 is an elevational view of the controlmember, detached;

Fig. 2'7 is an elevational view of the controlmember, viewing the same from the direction of the arrow 21 of Fig. 26;

Fig. 28 is a perspective view of the resettingfinger, detached;

Fig. 29 isa detached perspective view vof the inner slide-member of the manual bolt-operatingslide unit; and

Fig. 30 is a similar View of the outer slidemember of the manual bolt-operating-slide unit.

The particular self-loading repeating firearm herein chosen for purposes of illustrating the present invention is of the type wherein cartridges may be red singly for each pull of the trigger or the mechanism may be set to sequentially discharge an entire magizine full of cartridges by holding the trigger in its pulled-back position. The said rearm comprises a buttstock 35, a two-part receiver generally designated by the reference character 3S, a barrel 31 and a fore-end grip 38.

The receiver 36 above referred to includes an' upper receiver-member 39 and a lower receivermember 40 which are normally rmly and rigidly coupled together, but which as will hereinafter appear are readily separable one from the other. The said lower receiver-member is rigidly attached at its rear to the forward end of the buttstock 35 and is secured thereto by means of a bolt 4| shown in Fig. 1. The upper receivermember 39 is generally of cylindrical form exteriorly and has threaded into its extreme forward end the rear end of the barrel 31 to which latter in turn is secured the fore-end grip 38. Ihe upper receiver-member 39, the barrel 31 and the fore-end grip 38 constitute a unit demountable from and assemblable with the butt-unit which is composed. in the main, of the lower receivermember 40 and the buttstock 35.

About midway of its length the upper receivermember 39 is provided with a rigid depending coupling-lug 42 which at its rear portion is of inverted T-shaped form in cross-section as is especially well shown in Fig. 14. and has two oppositely-projecting coupling-ribs 413-43, the upper faces of which constitute upwardly-facing coupling-abutments. The coupling-ribs 43-43 are respectively adapted to enter coupling-grooves 44--44 formed in the respective opposite sidewalls 60 and 63 of a longitudinally-extending and upwardly-opening mechanism-receiving chamber 45 in the lower receiver-member 40. The respective upper walls of the coupling-grooves 44-44 constitute downwardly-facing couplingabutments. i

As is shown particularly well in Figs. and 16, each ofthe coupling-grooves 44-44 in the lower receiver-member 40 is connected at its front to the upper edge of the lower receivermember 40 by means of one of two similar vertical clearance-passages 46-46 one of which is formed in each of the side-walls 60 and 63 and which are sufficiently wide in a. direction lengthwise of the rearm structure to permit the ready entry of the coupling-ribs 43-43 of the upper receiver-member 39 for alignment with the respective forward 'ends of the coupling-grooves dllt4 therein.

For the lpurpose of releasably retaining the upper receiver-member 39 in assembled relationship with respect to the lower receiver-member 40, a latching-lever 41 is employed which is normally upwardly-and-rearwardly inclined. The

rear face of the said latching-lever 41 has camming engagement with an inclined forwardly- -facing locking-abutment 48 formed on the lug 42 depending from the upper receiver-member 39. The said latching-lever 41 acting through the locking-abutment 48 of the upper receivermember 39 serves to maintain the coupling-ribs 43-43 in the coupling-grooves 44-44 and also to maintain the rear edge of the said receiver- -member in seated enga/gement against an annular forwardly-facing seat 49. The said seat 43 is formed upon an integral portion 5i! upwardly extending from the rear portion o'f the lower receiver-member 4U.

The said upper receiver-member 39 is, gener.- ally speaking, of tubular form and is provided with a substantially-cylindrical interior mechanism-receiving chamber 5I in its rear portion which has a diameter substantially corresponding to the external diameter of a locating-ring 52. The said locating-ring 52 is formed integral with and forwardly projects from the portion 50 of the lower receiver-member and extends a short distance forwardly into the interior of the mechanism-receiving chamber 5| in" the upper receiver-member 39.

Returning now to the latching-lever 41, it will be noted that adjacent its forward end, the said lever is provided in one side face with two aligned coupling-grooves 53--53 (Fig. 19) extending diametrically of a transverse passage 541 of cylindrical form and located in the forward portion of the said'latchng-lever 41. The said latchinglever 41 is located in the forward portion of the mechanism-receiving chamber in the lower receiver-member 40, and is of a width substantially corresponding to the width of the said chamber, as is especially well shown in Fig. 9. The coupling-grooves 53-53 in the latching-lever 41 respectively receive one of a pair of coupling-lugs 55-55 projecting inwardly-from the inner face of a latch-releasing lever 56 (Fig. 20). The lugs 55-55 are located on the respective opposite sides of a threaded passage 51 formed in the lever 56 and adapted to register with the passage 54 in the latching-lever 41.

For the purpose of holding the latching-lever 41 and the latch-releasing lever 5B against axial 7 lateral separation, a coupling-screw 58 (Fig. 9)

is employed which has its shank first extended through the passage Il in the latching-lever I1 and then into threaded engagement with the threaded passage I1 in the latch-releasing lever 38. The head portion of the coupling-'screw 58 bears in a cylindrically-contoured opening `59 in the side-wall 48|! of .the mechanism-receiving chamber I5 of the lower receiver-member I0.

. Save for.its osettingllnger-piece 8|', the latchoi' the said latching-lever 41 with the latching-` abutment 48 before referred to. The lower end of the latch-spring 65 is seated in an upwardlyopening spring-pocket 88 formed in the lower receiver-member 40 in the bottom of the mechanism-receiving chamber l5 therein.

Mounted in the mechanism-receiving chamber 5| of the upper receiver-member 39 is a cylindri- Acally-contoured breech-bolt 61 which is provided with an integral coaxial and forwardly-projecting breech-closing stem 88. The said breechclosing stem 88 is cylindrically contoured and is adapted to be entered into and retired from a longitudinal passage 69 formed in the forward reduced diameter portion 39a of the upper receiver-member 39. At its rear end the passage 89 opens into the mechanism-receiving chamber 5| and at its forward end communicates with thel rear end of a cartridge-chamber 10 formed in the' rear end of the barrel 31 before referred to..

Leading upwardly and outwardly from the passage 89 which receives the breech-closing stem 88, is an ejection-opening 1|, as is shown especially well in Figs. 1,`10, 171 and 13. Extending downwardlyfrom the passagev 69 is a vertical magazine-receiving passage 1 2 having at the opposite sides of its lateral center line two downwardly-facing longitudinally-extending shoulders 13 and 14. v

Extending into the magazine-receiving passage 'l2 just above referred to, is the upper end of a box-magazine15 which may be of any convenient or usual construction not requiring detailed ldescription herein other than to state that it is adapted to force upwardly a column of cartridges such, for instance, as the cartridges 16 and 11.

The wall of the receiver `on the upper receivermember 39 adjacent the shoulder 14 is provided with a horizontal longitudinally-extending slot 18 receiving a plate-like `ejector 19 as is especially well shown in Figs. 1|)4 and 11. Projecting forwardly into the Vslot 18 is a retaining-linger -8|) (Fig. 1l) fitting within a rearwardly-opening notch 8| formed in the rear end' of the ejector 19. On it s inner edge, the ejector 19 is formed with a forwardly-facing ejecting-abutment 82 which is adapted to be sequentially engaged by the individual cartridges as the same are moved rearwardly after being -iired in the manner as will hereinafter appear. The forward outer corner of the ejector 19 is formed with a svp-finger 83 which is normally seated in a notch 84 forming a virtual continuation of the forward end of the slot 18 (Fig. 1l). As thus constructed and ar- 1 ranged, the rear portion of the ejector 19 is stabilized against either outward or inward movement and the forward end thereof` is stabilized against relativeinward movement.

To releasbly hold the forward portions of the ejector 19 against outward movement. the same 5 is provided with a vertical hatching-opening 83 receiving the latching-nose 86 (Fig. 10) formed at the lower end of a latching-plunger- 81. 'I'he said latching-plunger 81 is mounted for reciprocation inthe lower end of a downwardly-opening pocket 88 formed in the upper receiver-member 89 and opening through the face of the shoul- Vder 'I4 thereof. 'I'he pocket 88 also accommodates a helical spring 89 which yieldingly urges the 4 latching-plunger 81 downwardly to maintain its 15 iatchlng-nose 86 in the latching-'opening 85 in the ejector 19.

To remove -the ejector 19, the latching-nose 86 of the latching-plunger 81 may be retired by `a sharp instrument inserted through the magazinevreceiving passage 12, whereupon the said 4ejector may be maneuvered out of the slot 18 by first moving its forward end outwardly, so as to retire its stop-linger 83 from the notch 84.

For the purpose of extracting cartridges from 2li the cartridge-chamber 19 of the barrel 31, the breech-closing stem 68 of the breech-bolt 61 is provided with an extractor v9|l having at its forward end an inwardly-extending extracting-lip 9| extending radially into an annular recess 92 formed in the forward face of the said stem 88 i The forward portion of the breech-bo1t e1 and its breech-closing stem 68 accommodates a reciprocating firing-plunger generally designated by the reference character 93 and having a relatively-slender forwardly-extending firing-point 94 adapted to be projected forwardly to engage with the primer of a cartridge when the same is substantially fully installed in the cartridge-chamber 10 of the barrel 31 in a manner as will presently appear. The firing-point 94 reciprocates in and i 4is guided by an axial passage 95 which communicates at its rear end with a relatively-large-diametered passage 96 in which is accommodated the body-portion of the firing-plunger 93. The said passage 96 at its forwardend also accommodates ahelical retiring-spring 91 encircling the rear portion of the firing-point 94 and exerting a ccnstant but yielding effort to move the entire ringplunger 93 rearwardly.

For the purpose of moving the firing-plunger 93 forwardly to discharge a cartridge, a platelike advancing-lever 98 is employed. The said advancing-lever 98 is mounted in a substantiallyradial passage 99 leading from the axial passage 96 outwardly to the periphery of the breech-bolt 61 at a point immediately to the rear of the rear end of the breech-closing stem 68,-as is especially well shown in Figs. 2 and 3. The advancing-lever 98 is mounted for pivotal movement upon a vertical and tangential pivot-pin |88 carried by the breech-bolt 61 and is provided with a forwardlyextending actuating-nose IUI extending through a groove |92 leading forwardly from the passage 99 to the front face of the breech-bolt S1 proper.

For the purpose of yieldingly urging the breechbolt 61 forwardly into its breech-closing position shown in Fig. 3, the said breech-bolt is formed in its rear portion with an axial spring-receiving bore |93 opening through the rear end of the breech-bolt and at its forward end communicating with the smaller-diametered passage 96 in the forward portion of the breech-bolt. The dinerence in diameter between the bore |03 and the passage 96 results at the junction thereof in the formation of a rearwardly-facing seat |04 against which is seated the forward face of an internallythreaded plunger-head |05 threaded upon the forward end of a telescoping-plunger |06. The said plunger-head |05 is formed with a rearwardly-facing spring-seat |01 against which presses the forward end of a helical breech-closing spring encircling a tubular telescopingplunger |09, and hence also encircling the telescoping-plunger |06 which reciprocates within the said telescoping-plunger |09. The rear end of the breech-closing spring |08 is seated against the forward face of a head ||0 formed integral with the rear `end of the tubular telescopingplunger |09 just referred to.

For the purpose of limiting the axial separation of the two telescoping-members |06 and |09, the said telescoping-member |06 is provided adjacent its rear end with an integral annular stop-abutment which is adapted to engage a rearwardly-facing stop-abutment ||2 formed within the tubular telescoping-member |09 adjacent the forward end thereof. The head 0 of the tubular telescoping-plunger |09 seats against the rear wall of a forwardly-opening pocket ||3 formed centrally in the portion 50 at the rear upper part of the lower receiver-member 40, as is shown especially well in Figs. 2 and 3.

At its rear end the breech-bolt 61 is formed with an extension ||4 which, in the main, is cylindrically contoured and has a diameter Sullicient to freely fit within the interior of the locating-ring 52 of the lower receiver-member 40.

At its lower rear portion, the breech-bolt 61 is formed with a rearwardly-and-upwardly-sloping cam-surface ||5 for purposes as will hereinafter appear. About midway of its length the breechbolt 61 is formed in its under face with a forwardly-facing cooking-shoulder ||6 and is also formed in its lower face with Ytwo clearancegrooves respectively numbered and I|8, each of which is both laterally and longitudinally displaced with respect to the other as is especially well shown in Fig. 11. The downwardly-andrearwardly-sloping portion of the upper wall of the clearance-groove ||1 constitutes a cam-surface ||9 which functions in a manner as will hereinafter appear. Y

In its right side the breech-bolt 61 is formed with a longitudinally-extending groove |20 having its forward end intersecting the front end of the breech-bolt proper and having its rear end terminating just short of the rear end of the breech-bolt and constituting a forwardly-facing actuating-abutment |2|. The groove |20 receives with capacity for relative longitudinal' sliding movement the bar-like body-portion of an inner slide-member |22 of a manual bolt-operating slide generally designated by the reference character |23. At its forward end the inner slidemember |22 'is provided with a rigid outwardlyprojecting coupling-finger |24 projecting outwardly through a longitudinal slot |25 formed in the right side wall of the main portion of the upper receiver-member 39, as is particularly well shown in Figs. 9 and 11. The said couplingnger |24 after passing outwardly through the slot I 25 extends within a coupling-passage 29 extending perpendicularly through the forward portion of an outer slide-member |21. The said outer slide-member |21 is formed at its forward portion with an outwardly-projecting finger-piece |29 through which the coupling-passage |26 also extends and through which laterally extends a key-pin |29 also passing laterally through the coupling-finger |24 of the inner slide-member |22.

As thus constructed and arranged, `the couplinglinger |24 and the key-pin |29 serve to organize 3 the inner slide-member ,|22 and theouter slidemember |21 into a unitary structure which is capable-of recprocation with respect to the upper receiver-member 39 within substantially the limits of the length of the longitudinal slot |25 therein.

By virtue of the sliding llt of the inner slidemember |22 in the groove |20 in the side of the breech-bolt 61, the said breech-bolt is, in effect, held by the said inner slide-member |22 against rotational movement within the upper receivermember 39. The inner slide-member |22 as well as the outer slide-member.|21 is held against displacement around the periphery of the upper receiver-member 39 by the extension of the coupling-flnger |24 through the slot |25 in the said member. Under these conditions it follows that the breech-bolt 61 is keyed or splined against rotational movement Within the vupper receivermember 39 by the bolt-operating slide |23 while 5 being permitted free longitudinal movement within the said receiver-member.

The cooking-shoulder H6 before referred to of the breech-bolt 61 is releasably engageable by the rear face of a cooking-nose |30 formed at the 30 upper rear corner of a pivotal sear |3| located in the mechanism-receiving chamber 45in the lower receiver-member 40. Adjacent its forward end the said sear |3| is mounted upon a pivot-pin |32 extending across the chamber 45 and sup- 35 ported at its respective opposite ends in the respective opposite side walls 60 and 63 of the said chamber. 'I'he sear |3| extends slightly forwardly and downwardly beyond the pivot-pin |32 to provide a stop-nose |33 engageable on occao sion with the bottom wall of the mechanismreceiving chamber to linut the clockwise turning movement of the said sear |3 Substantially midway between the pivot-pin |32 and its rear end, the sear |3| is formed with a 45 downwardly-opening spring-pocket |34 receiving engageable the forward portion of a pivotal searreceiver-member 40.

actuating lever |33. The said lever |38 is pivotally mounted about midway of its length upon a pivot-pin |39 supported at its respective opposite ends in the side walls 60 and 63 of the lower The said scar-actuating lever |38 is located rearwardly of the sear |3| and has its rear end extended into position for being lliged on occasion by a pivotal scar-actuating dog vertically and is pivoted intermediate its respective opposite ends upon a pivot-pin |4| extending transversely across a notch-like recess |42 formed in the upper rear portion of atrigger |43.

The said pivot-pin |4| is carried by the said trigger |43 and is supported at its respective opposite ends in the side walls of the said recess |42. On each of its respective opposite sides the scar-actuating dog |40 is provided with one of viWO downwardly-facing stop-shoulders |44|44 The Sear-actuating dog |40 extends generally v For the purposegtf whichengage with the adjacent upper surface of the trigger |43 to thus limit the forward swinging movementof the upper en d of the said dog. yieldingly urging the upper end of the sear-a uating dog |40 forwardly, the lower end thereof le engaged by the rear end of a substantially-horioutal dog-spring |45 mounted in a substantially-horizontal rearwardly-opening spring-pocket |48 in the trigger |43.

The trigger |43 is pivoted at its upper forward portion upon a pivot-pin |41 extending laterally across the mechanism-receiving chamber 45 in the lower receiver-member 40 and supported in i the respective opposite side walls 60 and-63 thereof. The upper portion ofwthe trigger |43 is located partly in the mechanism-receiving chamber Just referred to, and partly within a vertical clearance-passage |48 extending downwardly from the chamber 45 through the bottom wall of the lower receiver-member 40 and into the space surrounded by a .loop-like trigger-guard |49 formed integral with the lower receivermember 40. 'I'he said trigger |43 is provided with a usual finger-piece |50 extending within the space crcumscribed by the trigger-guard |49 and movable backwardly and forwardly therein in the usual manner of triggers.

In its upper face adjacent its forward end but rearwardly of the pivot-pin |41,v the trigger. |43 is formed with an upwardly-opening spring-pocket The spring-pocket |5| just referred to receives the lower end of a helical spring |52 having its upper end seated in a downwardly-opening spring-pocket |53 formed in the sear-actuating ylever |38 at a point rearwardly of the pivot-pin |39 thereof.

The spring |52 above referred to discharges the double function of lightly urging the sear-actuating lever |38 to turn `in a clockwise direction,4

and similarly urging the trigger |43 to turn in a counterclockwise direction as is required to maintain the finger-piece |50 of the said trigger in its forward position. The said spring |52 by yieldingly urging the sear-actuating lever .|38 to turn ina clockwise direction maintains the forward end of the said lever in engagement with the upper surface of the actuating-lip |31 of the sear |3| and avoids lost motion between the said parts. It is to be here noted, however, that the tension of the spring |52 just referred to, is suiiiciently less ,than the tension of the more rugged sear-spring |35 as to be dominated by the latter. In other words, while the spring |52 normally exerts an effort to depress the rear end of the sear |3|, nevertheless the sear-spring |35 is of sufficient strength to overcome and prevent such turning under the urge of the said spring |52.

Returning now to the sear-actuating dog |40, it will be noted that the saiddo'g is provided at its -upper end with an upwardly-facing lifting-abut' ment |54 which is engageable with the under face of the rear portion of the sear-actuating lever |38 for the purpose of turning the saine in a -clockwise direction, under conditions as will hereinafter appear. The said sear-actuating dog is formed on its left side with a laterally-extending lug |55 (Fig. 24) providing an upwardly-andrearwardly-sloping-cam-surface |56 and a'downwardly-and-rearwardly-sloping retaining-surface |51. f

Both the cam-surface |56 and the retainingsurface |51 ofthe sear-actuating dog |40 are adapted to be engaged by th-tapered nose |58 formed at the rear end of a pivotal selector-lever |59 which also has a rearwardly-and-downwardly-sloping cam-surface 58a. The said selector-lever |59 is mainly located inthe mechamsmreceiving chamber 45 of the lower receiver- 5 member 40 adjacent the side wall 60 and, therefore, to one side though in overlapping relationship with respect to both the sear-actuating lever |38 and the sear |3|. The said selector-lever |59 like-the sear |3| is adapted to extend upwardly through' a' clearanceopening 39h in the bottom of the upper receiver-member 39 rnd is mounted intermediateits ends for pivotal a stud |60. The inner end of the said stud extends into and is rigidly attached to the selectorlever and projects laterally therefrom to the left into a suitable bearing-aperture |6| in the left side wall 60 of the lower receiver-member 40, as is shown particularly well in Fig. 6. To permit limited swinging movement, the selector-lever |59 2o is formed about midway between the stud |60'and its nose 58 with an arcuate clearance-slot |62 through which the pivot-pin |39 of the searactuating lever |38 extends. For the purpose of yieldingly urging the selector-lever l|59 to turn in a clockwise direction. a torsion-spring |63 is employed having the shorter of its two arms |64 forwardly extending and jammed into a groove or recess |65 formed in the side wall of the selector-lever |59, as is` shown especially well in Fig. 25. The longer arm |66 of the torsion-spring |63 extends rearwardly and downwardly and has its curved terminal portion normally resting upon an upwardly-facing ledge |61 formed upon the trigger |43.

The nose |58 at the rear end of the selectorlever |59 is'adapted to engage with the cam-surface |56 of the sear-actuating dog |40 to rock the upper end of the said dog rearwardly on occasion, as will hereinafter appear, and the said nose |58 is also adapted to engage with the retainingsurface |51 ofthe said dog to be retained thereby in a depressed position.

Extending forwardly from its stud |60 the selector-lever 59 is provided with a control-arm |68, the lower portion of which is under some conditions accommodated in a clearance-notch |69 formed. in the shank |10 of a manually-operable control-member generally designated by the reference character |1|. The clearance-notch |69 in the shank |10 results in the formation in the said shank of an eccentric portion |12 which is purposesV as will hereinafter appear. The shank |10 of the control-member |1| is mounted for turning ,movement in complemental transverse bearing-passages (Fig. 6) |13 and |14 respectively formed in the side walls and 63 of the lower receiver-member 40. Formed integral with and laterally offsetting from the shank |10 of the control-member |1| is a'nger-piece |15 extending alongside the outer face of the side Wall 63 of the receiver-member 40 in convenient position for manual manipulation.

About midway of its length the shank |10 of the control-member |1| is provided with an annular retaining-groove |16 receiving the upwardly-projecting retaining-nose 11 of an inverted cup-shaped retaining-plunger |18 mounted beneath the said shank |10 in an upwardlyopening pocket |19 formed in the bottom Wall of the mechanism-receiving chamber 45 of the lower receiver-member 40, as is especially well shown 75 in Fig. 6. The said retaining-plunger |18 is movement upon urged upwardly by a helical spring |80 locate d in the said ,pocket |19 and extending upwardly into the cavity within the lower portion of the inverted cup-shaped plunger |18.

The shank 0f the control-member |1| is flattened on three of its sides and the remaining fourth side is left convex as shown, `to provide a scar-supporting safety-surface |8| which acts' to prevent the downward swinging movement of the rear portion of the sear |3| when the controlmember is swung into the position in which-it is shown in Fig. 4. l

By virtue of its three ilat faces, the major portion of the shank y|10,of the control-member |1| is of non-circular form in cross-section yand the portion thereof adjacent the nger-'piece |15 has mounted thereon a resetting-finger |82 having a non-circular perforation |83 corresponding in form to the cross-sectional form of the adjacent portion of the shank |10. The resetting-finger |82 is accommodated mainly in, the mechanismreceiving chamber 45 of the lower receiver-inember 40 between the inner face of the side wall 63 thereof and the adjacent face ofthe sear |3|, as is especially well shown in Fig. 6. When the control-member |1| is turned intoits intermediate or safety position when the breech-bolt 61 is cocked, the upper portion of the said resettingiinger projects upwardly through the clearanceopening 39h and is accommodated in the clearance-groove ||8 in the said breech-bolt, as is shown in Fig. 4.

ment, in which position the mechanism is set forf semi-automatic operation of the erarm, that is to say, while the cartridges willy beautomatically extracted and ejected and a fresh .cartridge inserted into the cartridge-chamber 10, that nevertheless theV discharge of each sequentialcartridge inserted into the said cartridge-chamber 10 will require a separate and distinct pull of the trigger |43.

Let it now be assumed that the finger-piece |50 of the trigger |83 is Vpulled rearwardly. The described rearward movement of the linger-piece |50 will cause the clockwise swinging movement of the trigger |43 and hence result in causing the Sear-actuating dog |40 to bodily rise with the rear portion of the said trigger with ,the result that its upwardly-facing lifting-abutment |58 will be brought into lifting engagement with the under face of the rear end of the Sear-actuating lever |38 so that the said lever will also be turned in a clockwise direction about its pivot-pin |39.

The clockwise turning movement of the searactuating lever |38 as just abovey described will cause the under face of the forward-end thereof to press downwardly upon the upper surface of the actuating-lip |31 of the'sear |3| with the result that the rear portion ofthe vsaidsear-'I3l will be depressedagainst the tensin ofthe searspring |35 sufficiently to disengagey its cookingnose |30 from the cooking-shoulder ||6 of the breech-bolt 61, thus-releasing the said breechbolt for forward movement.

The release of the breech-bolt 61 as above described will enable the breech-closing spring |08 to assert itself and move the said breech-bolt forwardly toward the position in which it is shown in Fig. 3. Shortly after the initiation of the forward movement ofthe breech-bolt 61, the camsurface ||9 in the clearance-groove ||1 in the said breech-bolt will engage with the cam-surface |58a. ofthe selector-lever |59 with the result surface |56 of' the Sear-actuating dog |40. The

engagement just referred to will cause the upper portion of the said sear-actuatingdog to swing rearwardly against the tension of the dog-spring |45, thereby moving the lifting-abutment |54 out from under the rear end of the sear-aotuating lever |38. In its downward swinging movement. the nose |58, after swinging the upper lportion of the Sear-actuating ndog rearwardly as described,.passes beneaththe cam-surface |56 of the said dog and engages with the reversely-sloping retaining-surface |51y thereof, whereby the said selector-lever |59 is temporarily restrained in the position whichit has just assumed.

As soon as the upper portion of thesear-actuating dog |40 has been swung rearwardly as above described, so that the lifting-abutment |58 l thereof is moved out from beneath the rear end of the Sear-actuating lever |30, the said searactuating lever will be free to turn in a counterclockwise direction and the rear end of the sear |3| will be free to rise, both under the urge of the Sear-spring |35 and against the tension of the spring |52.y It will be understood that following the initial pull of the trigger |43, the said trigger.

will be in `its pulled position during the operations Just describedfsince the time-interval here involved is substantiallytoo short va time for the said trigger to be released by the user, even should that release be desired.

Immediately following its release by the sear |3|, the breech-,bolt 61 iii-moving forwardly will cause the forward face of its breech-closing stem 68 to engage with the lrear face of the cartridge 11 which-isuppermost in the box-magazine 15v and push the same forwardly and upwardly along an inclined path into the cartridge-chamber 10 of the barrel 31. During the latter part ofthe movement of the cartridge 11 as described, its

wise direction about its pivot-pin |00. TheV swinging movement of the advancing-lever 98 as just described, will cause the lower end thereof to positively drive the lring-p1unger93 forwardly to cause its firing-point 94 to discharge the cartridge 11' substantially coincidentallyv with the arrival of the latter'into-its fully-inserted position inthe cartridge-chamber 10 of. the barrel 31.

The parts. will now have momentarily assumed' the positions in which theyare sh'own in Fig. v3'.

Immediately'following the discharge of the cartridge 11 as above described, the breech-bolt 61 and the parts carried thereby will be caused to recoil very rapidly with the eiect ci causing the extractor 90 to withdraw the casing of the just-fired cartridge 11 from the cartridge-chamber and engage the same with the electingabutment 82 of the ejector 19 and thereby cause the said case to be flipped outwardly and upwardly through the ejection-opening 1| in 'the forward portion 39a of the upper receiver-member 39. The rearward movement oi the breechbolt 61 as l'ust described will be effected against the counter-urge of the breech-closing spring |08 and as soon asthe said rearward movement has been initiated, the actuating-nose IUI of the advancing-lever 98 will ride clear of the abutment 39e and thereby permit the retiring-spring 91 to rearwardly retire the firing-plunger 93 relative to v the breech-bolt.

The recoil forces above referred to will ultimately drive the breech-bolt 61 into its fullyretired position, which position is substantially represented in Fig. 2. 4During the said movement, the cam-surface ||5 at the lower rear corner of the said breech-bolt will cam the rear portion of the sear 13| downwardly. As soon, however, as the cooking-shoulder ||6 of the breechbolt has reached a position slightly to the rear 0i the rear face of the cooking-nose |30 of the said sear, the said cooking-nose will snap upwardly under the urge of the scar-spring |35 and again be in a position to releasably hold the breechbolt and the parts carried thereby in their cocked positions, as illustrated in Fig. 2. As the substantially cylindrical extension ||4 of the breechbolt 61 enters the interior of the locating-ring 52, air will be partially trapped within the said ring and thereby aid in cushioning and -ultimately halting the rearward travel of the said breechbolt. l

The next normal step 'in the operation of the firearm would be for the marksman to release rearward draft upon the linger-piece |50 of the trigger |43, since only in this manner can the rearm again be discharged when the controlmember |1| is in the position indicated in Figs. 2 and 3.

As soon now as rearward draft upon the,trigger |43 is`released, the helical spring |52 will act to swing the entire trigger in a counterclockwise direction ,and thereby bodily lower the Sear-actuating dog |40 with the eiect of first releasing the frictional engagement between the upper surface of the nose |58 of the selector-lever |59 and the retaining-surface |51 of the said dog. The torsion-spring |63 will now act to swing the selectorlever |59 in a clockwise direction until the said selector-lever reassumes the position in which it is shown in Fig. 2. The bodily lowering of the scar-actuating dog |40 will also bring its liftingabutment |54 to a point beneath the under-face of the rear portion of the scar-actuating lever |38 whereupon the upper end of the saic' dog will swing forwardly under the urge of th: helical dog-spring |45 to again reassume the position in which it is shown in Fig. 2, preparatory to again acting to discharge the firearm when the trigger |43 is again pulled.

Safety setting of the firearm mechanism To render the iirearm inoperative and thus prevent its being red, the control-member may be swung into the position in which it is represented by the broken lines B in Fig. 1 and the full-line position shown in Fig, 4.

When the control-member |1| .is in the `position just above referred to, the Sear-supporting safety-surface |8| of the said control-member will be moved beneath the adjacent portion of the sear |3|, to thereby positively prevent the rear portion of the said sear from being moved downwardly to release the breech-bolt 61 from its cocked position. The turning of the controlmember |1| into its safety position as just referred to will also cause the eccentric portion |12 thereof to rock the selector-lever |59 in a counterclockwise direction, though this movement of the selector-member is purely incidental and may, therefore, be ignored. When the controlmember is swung into its safety position, the resetting-finger |82 coupled thereto will be brought into an upright position, as is clearly shown in Fig. 4, with the upper portion of the said resetting-finger projected into the clearancegroove I8 inthe under surface of the breechbolt 61.

Normally, the control-member should be thrown into its safety position only -when the breech-bolt is in its cocked position, but in the event that if for any reason the control-member |1| should be thrown into its safety position when the breech-bolt is in its forward or breech-closing position, no harm will be done. When, however, it is desired to render the rearm again available for being discharged after the setting as just described, it is necessary for the marksman 'to lfirst draw rearwardly upon the fingerpiece |28 of the bolt-operating slide |23, to thereby cause the rear end of the inner slide-member |22 to engage with the actuating-abutment |2| in the breech-bolt 61. The continued rearward movement of the bolt-operating slide |23 will move the breech-bolt 61 rearwardly into its cocked position and during this movement, the cam-surface l5 on the lower rear portion of the said breech-bolt will engage with the resettingfinger |82 of the control-member |1|. The engagement just referred to will swing the resetting-linger |82 and the control-member |1| in a counterclockwise direction and automatically restore the said parts to the positions which they occupy in Figs. 2 and 3, wherein the rearm is set for so-called semi-automatic operation..

The automatic turning of the control-member |1| as just above described automatically avoids the jamming of the parts as might otherwise be the case, since were the said control-member to be left in its safe position while the breech-bolt was moved rearwardly, the cam-surface ||5 of the breech-bolt 61 would jam the rear portion of the sear downwardly against the safety surface |8| of the said control-member.

Full automatic setting of the firearm mechanism For the purpose of Yenabling the continuous discharge of the entire contents of the box-magazine 15 as the result of but a single pull of the trigger |43 and the holding ofr the said trigger in its pulled position, the control-member |1| should be swung into the position in which it is indicated by the broken line C in Fig. 1 and by full lines in Fig. 5.

When the control-member |1| is swung as above described, the eccentric portion |12 thereof will act upon the under face of the .control-arm |60 of the selector-lever 59, to swing the said selector-lever in a counterclockwise direction against the tension of the torsion-spring |63, and will" maintain the said selector-lever in its counterclookwise turned position.

The counterclockwise turning movement of the selector-lever |50` will cause the nose |00 thereof to cam its way past the lug |55 of the saar-actuating dog |40 and assume a position in which the said nose |08 in no way interferes with the movements of the said dog.

If now the trigger |43 is pulled, the liftingabutment |54 of the sear-actuating dog |40 will be caused to engage with the under face of the rear portion of the Sear-actuating lever |38 to cause the said lever to swing in a clockwise direction and thereby depress the rear end of the sear |3| and thus effect the discharge of the firearm. If. as is intended, rearward draft is maintained upon the trigger |43, the cocking-nose |30 of the sear |31 will be maintained in its depressed or inoperative position and when the breech-bolt 61 recoils as a result of the discharge of a cartridge, it will not be caught by the now-depressed sear |3| and will be free to again return to its breechclosing position to thereby insert and fire a fresh cartridge and to again repeat the cycle until the cartridges in the magazine 16 have been exhausted, or until rearward draft upon the trigger is relaxed.

The control-member |1| will be yieldingly retained in either one of its three positions above described by the engagement of the upper face of the retaining-nose |11 of the retaining-plunger respectively with a given one of the three at surfaces at the bottom of the retaining-groove z in the shank |10 of the said control-member The takedoum of the firearm To remove the upper receiver-member 39 and the parts carried thereby from the lower receivermember 40 and the parts carried thereby, the finger-piece 6| of the latch-releasing lever 56 should be depressed to thereby correspondingly depress the rear end of the latching-lever 41 and thus disengage the latter from the latching-abutment 48 0f the coupling-lug 42 of the upper receiver-member. 39.

When the latching-lever 41 is depressed as above described, the upper receiver-member 39 may be moved forwardly relative to the lower receiver-member 40 until its rear portion is free of the locating-ring 52 and the coupling-ribs 4.3-43 are forwardly retired from out of the 5 coupling-grooves 44--44 and are brought into registry with the vertical clearance-passages 46-46. The upper receiver-member 39, together with the parts carried thereby (including the breech-bolt 61); may now be lifted clear of the lower receiver-member 40 and completely removed therefrom.

To reassemble the firearm, the operations above described may be reversed.

reassembly of the firearm-units without requiring extremely careful and diiiicult manipulation of the breech-closing spring |08 or its equivalent.

The invention may be carried out in other specific ways than those herein set forth without departing from the spirit and essential characteristics of the invention, and the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended4 to be embraced therein.

I claim:

l. A self-loading repeating firearm including in combination: a receiver; a breech-bolt reciprocatable in said receiver; a sear for releasably holding the said breech-bolt in its retired position; a trigger; a scar-actuating' dog carried by the said trigger and movable relative thereto and bodily movable therewith; the said searactuating dog having a substantially-downwardly facing retaining-surface thereon; a Sear-actuating lever operatively interposed between the said sear and the said scar-actuating dog to transmit the movement of the latter to the said sear to effect the retirement thereof; a. selector-lever engageable with the said searactuating dog to retire the same out of operative relationship with the said scar-actuating lever, the said selector-lever being positioned for actuation by a portion of the said breech-bolt to automatically effect the retirement of the said scar-actuating dog as a result of the movement of the said breech-bolt, the said selector-lever also having a substantially-upwardly-facing retaining-surface releasably engageable with the downwardly-facing retaining-surface of the said Sear-actuating dog; and spring-means yieldingly moving the said lselector-lever in a direction to engage the retaining-surface thereof with the retaining-surface of the said scar-actuating dog.

2. A self-loading repeating firearm including in combination: a receiver; a breech-bolt reciprocable in the said receiver; a sear for releasably holding the said breech-bolt in its retired position; a scar-actuating lever operatively associated with the said sear to retire the same; a trigger; a Sear-actuating dog car- 0 ried by the said trigger and pivoted thereto for swinging movement into and out of position to engage a portion of the said searactuating lever; the said Sear-actuating dog having a substantally-downwardly-facing retaining surface thereon; a selector-lever engage- When the firearm is taken down as above dethe said breech-bolt to automatically effect the scribed, the breech-bolt 61 and the parts carried thereby may be very readily removed from the rear end of the upper receiver-member 39, together with the parts carried by the said breechbolt. The breech-closing spring |08 may be, in turn, removed from the breech-bolt 61 together with the two telescopng-members |06 and |09 as a unit shown in Fig. 18. The telescopingplungers |06 and |09 permit all of the axial expansion and contraction of the breech-closing spring |08 required for the operationof the nrearm, but the said telescoping-plungers act t0 limit the axial expansion of the said spring |08 when the firearm is taken down. The Hunting action just referred to serves to facilitate the tired position: asear-actuating lever operatively associated with the said sear to retire the same; a trigger; a sear-actuating dog carried by .the said trigger and pivoted thereto for swinging movement into andV out of position to engage a portion of the said sear-actuating lever; the said sear-actuating dog having a substantially-downwardly-face retaining-surface thereon; a selector-lever engageable with the said sear-actuating dog to swing the same into its retired position relative to the said sear-actuating lever, the said selector-lever being positioned for actuation by a Vportion of the said breech-bolt to automatically effect the swinging of the said sear-actuating dog into 'its retired position as a result of the movement of the said breech-bolt; the said selector-lever also having a substantially-upwardly-facing retaining-surface releasably engageable with the downwardly-facing retaining-surface of the said sear-actuating dog; spring-means yieldingly moving thesaidselectorlever in a direction to engage the retaining-surface thereof with the retaining-surface of the said sear-actuating dog and carried by the said trigger and yieldingly urging the said sear-actuating dog into position for engagement with the said sear-actuating lever.

in combination: a receiver; a breech-bolt reciprocatable in said receiver.; a sear for releasably holding the said breech-bolt in its retired position; a trigger; a sear-actuating dog carried by the said trigger andA movable relative thereto and bodily movable therewith; the said sear-actuating dog having a substantially downwardly-facing retaining-surface thereon, a sear-actuating lever operatively interposed between the said sear and the said sear-actuating dog to transmit the movement of the latter to the said sear to eiiect the retirement thereof; a selector-lever engageable with the said searactuating dog to retire the same out of operative relationship with the said sear-actuating lever, the said ,selector-lever being positioned for actuation by a portion of the said breech-bolt to automatically effect the retirement of the said sear-actuating dog as a result of the movement of the said breech-bolt; the said selector-lever also having a substantiallyupwardly-facing retaining-surface releasably engageable with the downwardly-facing retainingsurface of the said sear-actuating dog; springmeans yieldingly moving the said selector-lever in a direction to engage the retaining-surface thereof with the retaining-surface of the said sear-actuating dog and a manually-operable control-member engageable with the said selectorlever to rock the same into a retired position wherein the said selector-lever is out of operative relationship with respect to the said sear-actuating dog.

5. A self-loading repeating rearm including in combination: a receiver; a breach-bolt reciprocatable in the said receiver; a sear for releasably holding the said breech-'bolt in its retired position; a sear-actuating' lever operatively associated with the said sear to retire the same; a trigger; a sear-actuating dog carried by the said trigger and pivoted thereto for swinging movement into and out of position to engage a portion of the said sear-actuating lever; the said searactuating dog having a substantially-downwardly-facing retaining surface thereon, a selector-lever engageable with the said sear-actuating dog to swing the same into its retired'position relative to the said sear-actuating lever, the

said selector-lever being positioned for actuation spring-means 4. A self-loading repeating firearm including 9 bya portion of the said breech-bolt to automatically efect the swinging of the said sear-actuating dog into its retired position as a result of the movement of the said breech-bolt; the said selector-lever also having a substantially-upwardlyfacing retaining-surface releasably engageable with the downwardly-facing retaining-surface of the said sear-actuating dog; spring-means yieldingly moving the said selector-lever in a direction to engage the retaining-surface thereof with the retaining-surface of the said sear-actuating dog and a manually-operable control-member engageable with the said selector-lever to rock the same into a retired position wherein the said selector-lever is out of operative relationship with respect to the said pivotal sear-actuating dog.

6..A self-loading repeating rearm including in combination: a receiver; a breech-bolt reciprocatable in said receiver; a sear for releasably holding the said breech-bolt in its retired position; a trigger; a sear-actuating dog carried by the said trigger' and movable relative thereto and bodily movable therewith; the said sear-actuating dog having a substantially-downwardly-facing retaining surface thereon, a sear-actuating lever operatively interposed between the said sear and the said sear-actuating dog to transmit the movement of the latter to the said sear to eiTect the retirement thereof; a selector-lever engageable with the said sear-actuating dog to move the same into its retired position relative to the said sear-actuating lever, the said selectorlever being positioned for actuation by a portion of the said breech-bolt to automatically eiect the retirement of the sear-actuating dog, thc said selector-lever also having a substantiallyupwardly-facing retaining-surface releasably engageable with the downwardly-facing retainingsurface of the said sear-actuating dog; springmeans yieldingly moving the said selector-lever in a direction to engage the retaining-surface thereof with the retaining-surface of the said sear-actuating dog; spring-means carried by the said trigger and yieldingly urging the said searactuating dog into position for engagement with the said sear-actuating lever; and a manuallyoperable control-member engageable with the said selector-lever to rock the same into a retired position wherein the said selector-lever is out of operative relationship with respect to the said sear-actuating dog.

7.- AVself-loading repeating firearm including in combination: a receiver; a breech-bolt reciprocatable in the said receiver; a sear for releasably holding the said breech-bolt in its retired position; a'sear-actuating lever operatively associated with the said sear to retire the same; a trigger a. sear-actuating dog carried by the said trigger and pivotedthereto for swinging movement into and out of position to engage a portion of the said sear-actuating lever, the said searactuating dog having a substantially downwardly-facing retaining surface thereon; a selector-lever engageable with the said sear-actuating dog to swing the same into its retired position relative to the saidsear-actuating lever, the said selector-lever being positioned for actuation by a portion of the said breech-bolt to automatically effect the swinging of the said sear-actuating dog into its retired position as a result of the movement of the said breech-bolt; the said selectorlever also having a substantially-upwardly-facing retaining-surface releasablyengageable with the downwardly-facing retaining-surface of the said sear-actuating dog; spring-means yieldingly moving the said selector-lever in a direction to engage the retaining-surface thereof with the retaining-surface of the said scar-actuating dog; spring-means carried by the said trigger and yieldingly urging the said scar-actuating dog into position for engagement with the said Sear-actuating lever; and a manually-operable controlember engageable with the said selector-lever to rock the same into a retired position wherein the said selector-lever isrout of operative engagement with the said Sear-actuating dog.

8. A self-loading repeating rearm including in combination: a receiver; a breech-bolt reciprocatable in said receiver; a sear for releasably holding the said breech-bolt in its retired position; a trigger; a scar-actuating dog carried by the said trigger and movable relative thereto and bodily movable therewith; a scar-actuating lever operatively interposed between the said sear and the said Sear-actuating dog to transmit the movement of the latter to the said sear to eiect the retirement thereof; a selectdI-lever engageable with the said Sear-actuating dog to retire the same out of operative relationship with the said Sear-actuating lever, the said selector-lever being positioned for actuation by a portion of the said breech-bolt to automatically eiect the retirement of the Asaid scar-actuating dog as a result of the movement of the said breech-bolt; and a manually-operable control-member having means operatively acting on the said sear to prevent the movement of the same into its brechbolt-releasing position, the said control-member also having means engageable with the said selector-lever to swing the same into a retired position when the said control-member is swung into a positionv of non-interference with the said sear, and the said control-member being constructed and arranged to be swung into a third position wherein it is retired out of controlling relationship with respect to both the said sear and the said selector-lever.

9. A self-loading repeating firearm including in combination: a receiver; a breech-bolt reciprocatable in said receiver; a sear for releasably holding the said breech-bolt in its retired position; a trigger; a Sear-actuating dog carried by the said trigger and movable relative thereto and bodily movable therewith; a Sear-actuating lever operatively 'interposed between the said sear and the said Sear-actuating dog to transmit the movement of the latter to the said sear to effect the retirement thereof; a selector-lever engageable with the said scar-actuating dog to retire the same out of operative relationship with the said Sear-actuating lever, the said selectorlever Ibeing positioned for actuation by a portion of the said breech-bolt to automatically effect the retirement of the said Sear-actuating dog as a result of the movement of the said breech-bolt; a manually-operable control-member having means operatively acting on the said sear to prevent the movement of the same into its breechbolt-releasing position, the said control-member also having means engageable with the said selector-lever to swing the same into a retired position when the said control-member is swung into a position of non-interference with the said sear, and the said control-member being constructed and arranged to be swung into a third position wherein it is retired out of controlling relationship with respect to both the said sear and the said selector-lever; and means carried by the said control-member and extending into position for engagement by a portion of the said breech-bolt when the same is retired to automatically shift the said control-member into position torelease the said selector-lever of restraint.

' CARL G. SWEBILIUS. 

